DE3722007A1 - METHOD FOR PRODUCING BICYCLIC AMINOCARBONIC ACIDS, INTERMEDIATE PRODUCTS OF THIS METHOD AND THE USE THEREOF - Google Patents
METHOD FOR PRODUCING BICYCLIC AMINOCARBONIC ACIDS, INTERMEDIATE PRODUCTS OF THIS METHOD AND THE USE THEREOFInfo
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- DE3722007A1 DE3722007A1 DE19873722007 DE3722007A DE3722007A1 DE 3722007 A1 DE3722007 A1 DE 3722007A1 DE 19873722007 DE19873722007 DE 19873722007 DE 3722007 A DE3722007 A DE 3722007A DE 3722007 A1 DE3722007 A1 DE 3722007A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
- C07D209/04—Indoles; Hydrogenated indoles
- C07D209/08—Indoles; Hydrogenated indoles with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to carbon atoms of the hetero ring
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
- C07D209/52—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring condensed with a ring other than six-membered
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
- C07C271/06—Esters of carbamic acids
- C07C271/08—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms
- C07C271/10—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms
- C07C271/22—Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms to carbon atoms of hydrocarbon radicals substituted by carboxyl groups
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
- C07D209/04—Indoles; Hydrogenated indoles
- C07D209/30—Indoles; Hydrogenated indoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to carbon atoms of the hetero ring
- C07D209/42—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
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- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/06—Systems containing only non-condensed rings with a five-membered ring
- C07C2601/10—Systems containing only non-condensed rings with a five-membered ring the ring being unsaturated
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
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Abstract
Description
Acylderivate der Octahydroindol-2-carbonsäure, der Octahydrocyclopenta[b]pyrrol-2-carbonsäure bzw. der Decahydrocyclohepta[b]pyrrol-2-carbonsäure sind beispielsweise bekannt aus EP-A-79 022, EP-A-50 800, EP-A-84 164, EP-A-111 873, EP-A-37 231, US-Patent 43 50 704 oder US-Patent 45 87 258. Viele dieser Verbindungen zeigen eine bemerkenswerte biologische Aktivität. Sie hemmen beispielsweise hochwirksam das Angiotensin-Converting- Enzyme oder zeichnen sich durch eine nootrope Wirkung aus.Acyl derivatives of octahydroindole-2-carboxylic acid Octahydrocyclopenta [b] pyrrole-2-carboxylic acid or the Decahydrocyclohepta [b] pyrrole-2-carboxylic acid known for example from EP-A-79 022, EP-A-50 800, EP-A-84 164, EP-A-111 873, EP-A-37 231, US Patent 43 50 704 or US Patent 45 87 258. Many of these compounds show a remarkable biological activity. You inhibit for example, highly effective angiotensin converting Enzymes or are characterized by a nootropic effect.
Verbindungen der Formel ICompounds of formula I.
worin n=1-3, R Wasserstoff oder einen Acylrest und R¹ Wasserstoff, eine Estergruppe oder eine andere Carboxylschutzgruppe bedeuten, spielen eine Schlüsselrolle bei der Synthese der eingangs genannten Acylderivate.where n = 1-3, R is hydrogen or an acyl radical and R¹ is hydrogen, an ester group or another carboxyl protecting group, play a key role in the synthesis of the acyl derivatives mentioned at the beginning.
Oft ist es vorteilhaft, wenn das Kohlenstoffatom in Position 2 des bicyclischen Ringsystems dieser Wirkstoffe eine bestimmte absolute Konfiguration, vorzugsweise die S-Konfiguration aufweist. Man geht daher bei ihrer Synthese bevorzugt von Zwischenprodukten der Formel I aus, welche diese gewünschte Konfiguration am C-2 bereits aufweisen.It is often advantageous if the carbon atom is in Position 2 of the bicyclic ring system of these drugs a certain absolute configuration, preferably the S configuration. One goes therefore with their synthesis preferably from intermediates of the formula I, which already have this desired configuration on the C-2.
Bei einigen der bekannten Herstellungsverfahren für Verbindungen der Formel I war eine Racematspaltung unverzichtbar, wollte man zu Verbindungen mit einer definierten Konfiguration am C-2 gelangen. In some of the known manufacturing processes for Compounds of formula I was a racemate resolution indispensable if you wanted to connect with one defined configuration on the C-2.
Aus Tetrahedron Letter 1987 1413-1416 ist ein Verfahren bekannt, mit dessen Hilfe man ausgehend von L-Asparaginsäure in einer insgesamt 12-stufigen Synthese zu optisch einheitlichen Octahydroindol-Derivaten mit einer definierten Konfiguration an C-2 gelangt.A process is known from Tetrahedron Letter 1987 1413-1416 known, with the help of starting from L-aspartic acid in a 12-step synthesis too optical uniform octahydroindole derivatives with a defined configuration at C-2.
Es wurde nun gefunden, daß sich entsprechend substituierte Serinderivate durch Cyclisierung in optisch einheitliche Verbindungen der Formel I mit der gewünschten Konfiguration an C-2 überführen lassen, ohne daß auf irgend einer Stufe dieses neuen Verfahrens eine Racematspaltung notwendig wäre.It has now been found that corresponding substitution takes place Serine derivatives by cyclization in optically uniform Compounds of formula I with the desired configuration transferred to C-2 without being at any stage this new process would require a resolution.
Die Erfindung betrifft ein Verfahren zur Herstellung von Verbindungen der Formel I in welcherThe invention relates to a method for producing Compounds of formula I. in which
n=1, 2 oder 3 R (C₁-C₁₄)-Acyl und R¹ (C₁-C₆)-Alkyl, (C₃-C₇)-Cycloalkyl, (C₇-C₁₁)-Aralkyl oder eine andere Carboxyschutzgruppe bedeuten, n = 1, 2 or 3 are R (C₁-C₁₄) acyl and R¹ (C₁-C₆) alkyl, (C₃-C₇) cycloalkyl, (C₇-C₁₁) aralkyl or another carboxy protecting group,
wobei die Wasserstoffatome an den Brückenkopf-Kohlenstoffatomen 3a und (5+n)a vorzugsweise cis-konfiguriert sind, das dadurch gekennzeichnet ist, daß man Verbindungen der Formel IIwherein the hydrogen atoms on the bridgehead carbon atoms 3a and (5+ n) a are preferably cis-configured, which is characterized in that compounds of the formula II
in welcher n, R und R¹ wie oben definiert sind und Hal Chlor, Brom oder Iod bedeutet, radikalisch cyclisiert.in which n , R and R 1 are as defined above and Hal is chlorine, bromine or iodine, cyclically cyclized.
Wie folgendes Schema zeigt, gelangt man mit Hilfe der erfindungsgemäßen Verfahren ausgehend von beispielsweise 3-Bromcyclopenten (V) und L-Serin (III) in einer insgesamt nur 7-stufigen Synthese zu den optisch einheitlichen Diastereomeren Ia und Ib, die Homologe der oben erwähnten Octahydroindol-Derivate sind. Wenn man das Verfahren über die Stufe des L-Serinbenzylesters durchführt, verringert sich sogar dessen Stufenzahl um eine Stufe auf insgesamt 6 Stufen. As the following diagram shows, the processes according to the invention, starting from, for example, 3-bromocyclopentene (V) and L-serine (III), give the optically uniform diastereomers Ia and Ib, the homologs of the abovementioned ones, in a total of only 7 steps Are octahydroindole derivatives. If the process is carried out via the L-serine benzyl ester stage, the number of stages thereof is even reduced by one stage to a total of 6 stages.
Das Kohlenstoffatom in Position 2 des bicyclischen Ringsystems der Verbindungen der Formeln I und II kann sowohl die R- als auch die S-Konfiguration aufweisen; bevorzugt ist die S-Konfiguration.The carbon atom in position 2 of the bicyclic Ring system of the compounds of the formulas I and II can have both the R and S configurations; the S configuration is preferred.
R ist vorzugsweise (C₁-C₆)-Alkanoyl, (C₆-C₁₀)-Aryl-(C₁-C₄)-alkanoyl, (C₆-C₁₀)-Aroyl, (C₁-C₆)-Alkoxycarbonyl oder (C₇-C₁₁)-Aralkyloxycarbonyl, insbesondere aber (C₁-C₄)-Alkanoyl, wie Acetyl oder Propionyl, Benzoyl oder substituiertes Benzoyl, wie beispielsweise Halogenbenzoyl, Methoxybenzoyl, Dimethoxybenzoyl oder Nitrobenzoyl.R is preferably (C₁-C₆) alkanoyl, (C₆-C₁₀) aryl- (C₁-C₄) alkanoyl, (C₆-C₁₀) aroyl, (C₁-C₆) alkoxycarbonyl or (C₇-C₁₁) aralkyloxycarbonyl, but especially (C₁-C₄) alkanoyl, such as acetyl or Propionyl, benzoyl or substituted benzoyl, such as for example halobenzoyl, methoxybenzoyl, Dimethoxybenzoyl or nitrobenzoyl.
Des weiteren kann R, falls von den vorstehenden Definitionen nicht schon umfaßt, für eine in der Peptidchemie übliche Aminschutzgruppe vom Urethantyp stehen (vgl. z. B. Hubbuch, Kontakte Merck 3/79, 14-22). Schutzgruppen vom Urethantyp sind beispielsweise Pyoc, Fmoc, Tcboc, Z, Boc, Ddz, Bpoc, Adoc, Msc, Moc, Z(NO₂), Z(Hal n ), Dobz, Iboc, Adpoc, Mboc und 1,4-Dimethyl-pyridyl-oxycarbonyl.Furthermore, if not already included in the above definitions, R can represent an amine protecting group of the urethane type which is customary in peptide chemistry (cf., for example, Hubbuch, contacts Merck 3/79, 14-22). Protecting groups of the urethane type are, for example, Pyoc, Fmoc, Tcboc, Z, Boc, Ddz, Bpoc, Adoc, Msc, Moc, Z (NO₂), Z (Hal n ), Dobz, Iboc, Adpoc, Mboc and 1,4-dimethyl pyridyl oxycarbonyl.
R¹ ist vorzugsweise (C₁-C₄)-Alkyl, wie z. B. Methyl, Ethyl oder tert.-Butyl, oder (C₇-C₁₁)-Aralkyl, wie beispielsweise Benzyl.R¹ is preferably (C₁-C₄) alkyl, such as. B. methyl, ethyl or tert-butyl, or (C₇-C₁₁) aralkyl, such as Benzyl.
Weiterhin kann R¹, falls von den vorstehenden Definitionen nicht schon umfaßt, für eine in der Peptidchemie übliche Carboxylschutzgruppe stehen (vgl. z. B. oben genannten Artikel von Hubbuch), beispielsweise die schon erwähnte Alkylreste oder Benzyl. Weiter sind modifizierte Benzylreste, wie p-Nitrobenzyl, p-Methoxybenzyl, p-Brombenzyl, p-Chlorbenzyl und Reste wie 4-Picolyl oder Benzoylmethyl geeignet. Furthermore, R1 may, if from the above definitions not already included, for one common in peptide chemistry Carboxyl protecting group (see, e.g., above Hubbuch article), for example the one already mentioned Alkyl radicals or benzyl. There are also modified ones Benzyl radicals, such as p-nitrobenzyl, p-methoxybenzyl, p-bromobenzyl, p-chlorobenzyl and residues such as 4-picolyl or Benzoylmethyl suitable.
Unter Alkyl wird im vorstehenden und im folgenden geradkettiges oder verzweigtes Alkyl verstanden. Entsprechendes gilt davon abgeleitete Reste wie z. B. Alkanoyl und Aralkyl. Niederalkyl weist vorzugsweise bis zu 6 C-Atome auf. (C₆-C₁₀)-Aryl ist beispielsweise Phenyl oder Naphthyl; bevorzugt ist Phenyl. Entsprechendes gilt für davon abgeleitete Reste wie z. B. Aroyl und Aralkyl.Alkyl is used in the above and in the following straight-chain or branched alkyl understood. The same applies to residues derived from such. B. Alkanoyl and aralkyl. Lower alkyl preferably has up to 6 carbon atoms. (C₆-C₁₀) aryl is, for example, phenyl or Naphthyl; phenyl is preferred. The same applies to residues derived therefrom such as e.g. B. Aroyl and aralkyl.
Die radikalische Cyclisierung kann z. B. mit Trialkylstannanen, wie z. B. mit Tri-n-butylzinnhydrid in einem geeigneten Lösungsmittel zwischen -20°C und 120°C, vorzugsweise zwischen 0°C und dem Siedepunkt des Reaktionsgemisches, insbesondere bei Siedetemperatur gegebenenfalls in Gegenwart eines Radikalinitiators durchgeführt werden. Als Lösungsmittel kommen dabei insbesondere aprotische Lösungsmittel wie Benzol, Toluol oder Xylol in Frage. Geeignete Initiatoren sind beispielsweise organische Peroxide, wie tert.-Butylperoxid, substituierte Azo-alkansäuredinitrile, wie z. B. 2,2′-Azoisobuttersäuredinitril (AIBN), Mercaptane und Stannane; bevorzugt ist AIBN.The radical cyclization can e.g. B. with Trialkylstannanes, such as. B. with tri-n-butyltin hydride in a suitable solvent between -20 ° C and 120 ° C, preferably between 0 ° C and the boiling point of the Reaction mixture, especially at the boiling point optionally in the presence of a radical initiator be performed. Come as a solvent especially aprotic solvents such as benzene, toluene or xylene in question. Suitable initiators are for example organic peroxides, such as tert-butyl peroxide, substituted azo-alkanoic acid dinitriles, such as. B. 2,2'-azoisobutyronitrile (AIBN), mercaptans and Stannane; AIBN is preferred.
Des weiteren kann die radikalische Cyclisierung in einem geeigneten dipolar aprotischen Lösungsmittel zwischen -20°C und dem Siedepunkt des Reaktionsgemisches vorzugsweise zwischen 10 und 50°C durchgeführt werden. Geeignete dipolar aprotische Lösungsmittel sind beispielsweise Ether, wie Diethylether, Tetrahydrofuran und Dioxan.Furthermore, the radical cyclization can be carried out in one suitable dipolar aprotic solvent between -20 ° C and the boiling point of the reaction mixture is preferred between 10 and 50 ° C. Suitable Dipolar aprotic solvents are, for example, ethers, such as diethyl ether, tetrahydrofuran and dioxane.
Man stellt die Verbindungen der Formel II her ausgehend von Cycloalkenylbromiden der Formel XI,The compounds of formula II are prepared starting from Cycloalkenyl bromides of the formula XI,
worin n=1, 2 oder 3 ist. Diese werden mit Serinderivaten der Formel IV, in der R¹ wie oben definiert ist, vorzugsweise (C₁-C₆)-Alkyl oder (C₇-C₁₁)-Aralkyl, wie Methyl oder Benzyl bedeutet und die R- oder S-, vorzugsweise S-konfiguriert sind, in Gegenwart einer Base wie K₂CO₃ in einem dipolar aprotischen Lösungsmittel wie Acetonitril zwischen 0°C und dem Siedepunkt des Reaktionsgemisches, vorzugsweise bei Raumtemperatur zu Verbindungen der Formel XIIwhere n = 1, 2 or 3. These are with serine derivatives of the formula IV, in which R¹ is as defined above, preferably (C₁-C₆) alkyl or (C₇-C₁₁) aralkyl, such as methyl or benzyl, and the R- or S-, preferably S-configured are in the presence of a base such as K₂CO₃ in a dipolar aprotic solvent such as acetonitrile between 0 ° C and the boiling point of the reaction mixture, preferably at room temperature to give compounds of formula XII
worin n und R¹ wie oben definiert sind, umgesetzt.wherein n and R1 are as defined above.
Da die Verbindung der Formel XII als Diastereomerengemisch vorliegen kann, kann dieses gegebenenfalls über Salzbildung und fraktionierte Kristallisation oder durch Chromatographie in die reinen Diastereomeren getrennt werden. Werden die reinen Diastereomeren in die Reaktionsfolge eingesetzt, so entfällt auf einer späteren Stufe die Diastereomerentrennung, was sich dann günstig auf die Gesamtausbeute auswirkt.Since the compound of formula XII as a mixture of diastereomers may be present, this may be via salt formation and fractional crystallization or by Chromatography can be separated into the pure diastereomers. The pure diastereomers in the reaction sequence used, the will not apply at a later stage Diastereomer separation, which then has a favorable effect on the Overall yield affects.
Verbindungen der Formel XII werden nun zu Verbindungen der Formel XIII acyliert,Compounds of the formula XII now become compounds of the Formula XIII acylated,
worin n, R und R¹ wie oben definiert sind. Die Acylierung führt man zweckmäßig vorzugsweise in Gegenwart einer Base in einem dipolar aprotischen Lösungsmittel wie Aceton zwischen -20°C und dem Siedepunkt des Reaktionsgemisches, vorzugsweise bei Raumtemperatur durch. Als Acylierungsmittel kommen beispielsweise die Chloride der Formel RCl oder die Anhydride der Formel R₂O in Frage. Geeignete Basen sind tert. Amine wie Triethylamin und anorganische Basen wie K₂CO₃. wherein n , R and R¹ are as defined above. The acylation is advantageously carried out preferably in the presence of a base in a dipolar aprotic solvent such as acetone between -20 ° C. and the boiling point of the reaction mixture, preferably at room temperature. Examples of suitable acylating agents are the chlorides of the formula RCl or the anhydrides of the formula R₂O. Suitable bases are tert. Amines such as triethylamine and inorganic bases such as K₂CO₃.
Die Umsetzung der Verbindungen der Formel XIII zu Verbindungen der Formel II, worin n, R, R¹ und Hal wie oben definiert sind, erfolgt zweckmäßigerweise so, daß man die Hydroxyfunktion der Verbindungen der Formel XIII durch eine Abgangsgruppe ersetzt. So lassen sich nach bekannten Verfahren beispielsweise die entsprechenden Tosylate, Mesylate oder Triflate herstellen, die anschließend mit Chlorid, Bromid oder Iodid nucleophil in die Verbindungen der Formel II überführt werden können.The conversion of the compounds of the formula XIII to compounds of the formula II, in which n , R, R 1 and Hal are as defined above, is advantageously carried out by replacing the hydroxy function of the compounds of the formula XIII by a leaving group. For example, the corresponding tosylates, mesylates or triflates can be prepared by known processes and can then be converted nucleophilically into the compounds of the formula II using chloride, bromide or iodide.
Chlor kann aber auch direkt eingeführt werden, z. B. durch Umsetzung der Verbindungen der Formel XIII mit PCl₅, Brom z. B. durch Umsetzung mit PBr₃. Die Iodverbindung der Formel II wird zweckmäßigerweise mit Triphenylphosphin und Iod in Gegenwart von Imidazol vorzugsweise bei Raumtemperatur in einem aprotischen unpolaren Lösungsmittel wie z. B. Benzol oder Toluol aus Verbindungen der Formel XIII hergestellt.Chlorine can also be introduced directly, e.g. B. by Implementation of the compounds of formula XIII with PCl₅, bromine e.g. B. by reaction with PBr₃. The iodine compound of the formula II is conveniently in with triphenylphosphine and iodine Presence of imidazole preferably at room temperature in an aprotic non-polar solvent such as. B. Benzene or toluene prepared from compounds of formula XIII.
Die Erfindung betrifft auch die Zwischenprodukte der Formel IIa,The invention also relates to the intermediates of the formula IIa,
in welcherin which
n=1, 2 oder 3, X= Hydroxy, Chlor, Brom oder Iod, R= Wasserstoff oder (C₁-C₁₄)-Acyl und R¹= (C₁-C₆)-Alkyl, (C₃-C₇)-Cycloalkyl, (C₇-C₁₁)-Aralkyl oder eine andere Carboxylschutzgruppe bedeuten. n = 1, 2 or 3, X = hydroxy, chlorine, bromine or iodine, R = hydrogen or (C₁-C₁₄) acyl and R¹ = (C₁-C₆) alkyl, (C₃-C₇) cycloalkyl, (C₇ -C₁₁) aralkyl or another carboxyl protecting group.
Die nachstehenden Beispiele dienen zur Erläuterung der Erfindung, ohne daß diese beschränkt wäre.The following examples serve to explain the Invention without being limited.
Zu 24,5 g L-Serinmethylester-hydrochlorid in 200 ml
trockenem Acetonitril werden 48 g festes K₂CO₃ gegeben. Zu
dieser Mischung wird 23,2 g Cyclopentenylbromid in
Tetrachlorkohlenstoff bei Eiskühlung gegeben. Man läßt auf
Raumtemperatur kommen und rührt 2 Stunden bei dieser
Temperatur. Nach dem Absaugen des Feststoffes wird das
Filtrat eingeengt und der Rückstand über Kieselgel mit
CH₂Cl₂ als Elutionsmittel chromatographiert.
Ausbeute: 7,6 g; Fp. 113-126°C
:-30,5° (c=1,13; CH₃OH)48 g of solid K₂CO₃ are added to 24.5 g of L-serine methyl ester hydrochloride in 200 ml of dry acetonitrile. 23.2 g of cyclopentenyl bromide in carbon tetrachloride are added to this mixture while cooling with ice. The mixture is allowed to come to room temperature and stirred at this temperature for 2 hours. After the solid has been filtered off with suction, the filtrate is concentrated and the residue is chromatographed on silica gel using CH₂Cl₂ as the eluent.
Yield: 7.6 g; Mp 113-126 ° C
: -30.5 ° (c = 1.13; CH₃OH)
Das Diastereomerengemisch aus Beispiel 1 wird mit ethanolischer HCl in Essigester in das Hydrochlorid überführt (Fp. 150-160°C, =10,9° (c= 0,96; CH₃OH) und anschließend mehrere Male aus trockenem Acetonitril umkristallisiert. Die S,S-Verbindung (94%ig, als HCl-Salz) hat einen Drehwert von =-67° (c=0,85; CH₃OH); Fp. 180°CThe mixture of diastereomers from Example 1 is converted into the hydrochloride with ethanolic HCl in ethyl acetate (mp. 150-160 ° C, = 10.9 ° (c = 0.96; CH₃OH) and then recrystallized several times from dry acetonitrile. S-compound (94%, as HCl salt) has a rotation value of = -67 ° (c = 0.85; CH₃OH); mp. 180 ° C
Die freie Base wird aus dem Hydrochlorid mit wäßriger
K₂CO₃-Lösung freigesetzt.
= -111,7° (c=0,86; CH₃OH)The free base is released from the hydrochloride with an aqueous K₂CO₃ solution.
= -111.7 ° (c = 0.86; CH₃OH)
Analog Beispiel 2 wird die (R,S)-Verbindung als HCl-Salz
durch Umkristallisation des Hydrochlorids in trockenen
Acetonitril, Essigester und CH₂Cl₂ erhalten (ca. 85%ig).Fp. 152-154°C; =+82,78° (c=0,61; CH₃OH).
der freien Base: +38,3° (c=0,88; CH₃OH)Analogously to Example 2, the (R, S) compound is obtained as an HCl salt by recrystallization of the hydrochloride in dry acetonitrile, ethyl acetate and CH₂Cl₂ (approx. 85%). 152-154 ° C; = + 82.78 ° (c = 0.61; CH₃OH).
the free base: + 38.3 ° (c = 0.88; CH₃OH)
10,5 g Methylester aus Beispiel 1 werden in 164 ml gesättigter wäßriger NaHCO₃-Lösung suspendiert. Dazu wird bei Raumtemperatur 11,24 ml Chlorameisensäurebenzylester gegeben. Nach weiteren 2 Stunden Rühren wird mit Essigester extrahiert. Die organische Phase wird nacheinander mit 2N wäßriger HCl halbgesättigter wäßriger NaHCO₃-Lösung, Wasser und gesättigter wäßriger NaCl-Lösung gewaschen. Nach dem Trocknen wird eingeengt. Der Rückstand wird über Kieselgel mit CH₂Cl₂/Essigester 95 : 5 chromatographiert.Ausbeute: 14,4 g, = -65° (c=1; CH₃OH)10.5 g of methyl ester from Example 1 are suspended in 164 ml of saturated aqueous NaHCO₃ solution. 11.24 ml of benzyl chloroformate are added at room temperature. After stirring for a further 2 hours, the mixture is extracted with ethyl acetate. The organic phase is washed successively with 2N aqueous HCl semi-saturated aqueous NaHCO₃ solution, water and saturated aqueous NaCl solution. After drying, the mixture is concentrated. The residue is chromatographed on silica gel with CH₂Cl₂ / ethyl acetate 95: 5. Yield: 14.4 g, = -65 ° (c = 1; CH₃OH)
0,412 g Triphenylphosphin und 0,107 g Imidazol werden in 7 ml
trockenen Benzol vorgelegt. Dazu werden 0,346 g Iod in 3 ml
trockenen Benzol bei Raumtemperatur zugetropft. Es wird
nach Ausfallen eines gelben Niederschlages 10 Minuten
nachgerührt. Dazu werden bei Raumtemperatur und unter
Lichtschutz 0,3 mg des Alkohols aus Beispiel 4 in 2 ml
trockenem Benzol zugetropft. Es wird 3 Stunden bei
Raumtemperatur gerührt. Danach wird die Mischung auf
Ether/Wasser gegossen. Die Etherlösung wird mit Wasser
gewaschen, getrocknet und einrotiert. Der Rückstand wird
über Kieselgel mit Cyclohexan/Essigester 9 : 1
chromatographiert.
Ausbeute: 0,2 g Öl; Rf: 0,65 (SiO₂; CH₂Cl₂/Essigester 95 : 5; I₂)0.412 g triphenylphosphine and 0.107 g imidazole are placed in 7 ml dry benzene. 0.346 g of iodine in 3 ml of dry benzene are added dropwise at room temperature. After precipitation of a yellow precipitate, stirring is continued for 10 minutes. For this purpose, 0.3 mg of the alcohol from Example 4 in 2 ml of dry benzene are added dropwise at room temperature and with protection from light. It is stirred for 3 hours at room temperature. The mixture is then poured onto ether / water. The ether solution is washed with water, dried and evaporated. The residue is chromatographed on silica gel with cyclohexane / ethyl acetate 9: 1.
Yield: 0.2 g oil; R f : 0.65 (SiO₂; CH₂Cl₂ / ethyl acetate 95: 5; I₂)
3,25 g Iodverbindung aus Beispiel 5, 521 mg Azobisisobutyronitril (AIBN) und 2,31 g Tri-n-butylzinnhydrid werden in 260 ml trockenem Benzol gelöst. Es wird 4 Stunden am Rückfluß unter Stickstoff gekocht. Danach wird enrotiert und der Rückstand in Ether aufgenommen. Die Etherlösung wird 30 Minuten mit 10%iger wäßriger KF-Lösung gerührt; nach Filtration wird die Etherlösung getrocknet und einrotiert. Der Rückstand wird über Kieselgel chromatographiert mit Cyclohexan/Essigester 4 : 1.Ausbeute: 2,0 g = -40,5° (c= 1,035; CH₃OH)3.25 g of iodine compound from Example 5, 521 mg of azobisisobutyronitrile (AIBN) and 2.31 g of tri-n-butyltin hydride are dissolved in 260 ml of dry benzene. It is refluxed for 4 hours under nitrogen. The mixture is then rotated and the residue is taken up in ether. The ether solution is stirred for 30 minutes with 10% aqueous KF solution; after filtration, the ether solution is dried and evaporated. The residue is chromatographed on silica gel using cyclohexane / ethyl acetate 4: 1. Yield: 2.0 g = -40.5 ° (c = 1.035; CH₃OH)
1 g Diastereomerengemisch aus Beispiel 6 werden in 10 ml Benzylalkohol gelöst, 0,35 ml Titantetraisopropylat zugetropft und in Ölpumpenvakuum 4 Stunden bei 90°C gerührt. Anschließend werden weitere 1,6 ml Titantetraisopropylat zugetropft und 6 Stunden bei 90°C in Ölpumpenvakuum gerührt. Dann wird der Benzylalkohol im Vakuum entfernt und der Rückstand in Ether aufgenommen, der Ether mit 2N wäßriger HCl, dann mit gesättigter wäßriger NaHCO₃-Lösung und nach dem Absaugen des Niederschlages mit gesättigter wäßriger NaCl-Lösung gewaschen. Nach dem Trocknen wird einrotiert. Der Rückstand wird über Kieselgel mit Cyclohexan/Essigester 9 : 1 chromatographiert. Das zuerst eluierte Produkt ist die (1R,3S,5R)-Verbindung (cis, exo-Konfiguration).Ausbeute: 422 mg = 101,6° (c=0,82; CH₃OH)1 g of diastereomer mixture from Example 6 is dissolved in 10 ml of benzyl alcohol, 0.35 ml of titanium tetraisopropylate is added dropwise and the mixture is stirred at 90 ° C. in an oil pump vacuum for 4 hours. A further 1.6 ml of titanium tetraisopropylate are then added dropwise and the mixture is stirred at 90 ° C. in an oil pump vacuum for 6 hours. Then the benzyl alcohol is removed in vacuo and the residue is taken up in ether, the ether is washed with 2N aqueous HCl, then with saturated aqueous NaHCO₃ solution and, after the precipitate has been suctioned off, with saturated aqueous NaCl solution. After drying, it is spun in. The residue is chromatographed on silica gel with cyclohexane / ethyl acetate 9: 1. The first eluted product is the (1R, 3S, 5R) compound (cis, exo configuration). Yield: 422 mg = 101.6 ° (c = 0.82; CH₃OH)
Das nach der cis-exo-Verbindung eluierte Produkt aus Beispiel 7 ist die (1S,3S,5S)-Verbindung (cis, endo-Konfiguration).Ausbeute: 553 mg Öl (aus Ansatz des Beispiels 7) = -2,8° (c=1,1; CH₃OH)The product from Example 7 eluted after the cis-exo compound is the (1S, 3S, 5S) compound (cis, endo configuration). Yield: 553 mg of oil (from the approach of Example 7) = -2.8 ° (c = 1.1; CH₃OH)
400 mg des Endproduktes aus Beispiel 7 werden in 10 ml
Ethanol gelöst, dazu 50 mg Pd/C (10%ig) gegeben und 6
Stunden hydriert.
Nach Absaugen des Katalysators wird eingeengt und der
Rückstand mit Essigester verrührt.
Ausbeute: 90 mg; Fp. 220-225°C
= -48,4° (c=0,37; CH₃OH)400 mg of the end product from Example 7 are dissolved in 10 ml of ethanol, 50 mg of Pd / C (10%) are added and the mixture is hydrogenated for 6 hours. After the catalyst has been filtered off with suction, the mixture is concentrated and the residue is stirred with ethyl acetate. Yield: 90 mg; Mp 220-225 ° C
= -48.4 ° (c = 0.37; CH₃OH)
Analog Beispiel 9 werden 500 mg aus Beispiel 8 umgesetzt.
Ausbeute: 186 mg; Fp. 235-238°C
= -53° (c= 0,52; CH₃OH)500 mg from Example 8 are reacted analogously to Example 9. Yield: 186 mg; Mp 235-238 ° C
= -53 ° (c = 0.52; CH₃OH)
Claims (7)
Priority Applications (19)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873722007 DE3722007A1 (en) | 1987-07-03 | 1987-07-03 | METHOD FOR PRODUCING BICYCLIC AMINOCARBONIC ACIDS, INTERMEDIATE PRODUCTS OF THIS METHOD AND THE USE THEREOF |
FI883141A FI92691C (en) | 1987-07-03 | 1988-06-30 | Process for the preparation of bicyclic amino carboxylic acids and intermediates used in this process |
CA000572358A CA1332422C (en) | 1987-07-03 | 1988-06-30 | Process for the preparation of bicyclic amino carboxylic acids, intermediates in this process, and their use |
HU883459A HU203533B (en) | 1987-07-03 | 1988-07-01 | Process for producing bicyclic amino-carboxylic acids |
JP63162750A JP2564614B2 (en) | 1987-07-03 | 1988-07-01 | Method for producing bicyclic aminocarboxylic acid |
IE201988A IE66150B1 (en) | 1987-07-03 | 1988-07-01 | A process for the preparation of bicyclic amino carboxylic acids intermediates in this process and their use |
US07/214,457 US5011940A (en) | 1987-07-03 | 1988-07-01 | Process for the preparation of bicyclic amino carboxylic acids, intermediates in this process, and their use |
NO882957A NO173864C (en) | 1987-07-03 | 1988-07-01 | Process for Preparation of Bicyclic Aminocarboxylic Acids, and Intermediate of the Process |
KR1019880008172A KR960012363B1 (en) | 1987-07-03 | 1988-07-01 | Process for the preparation of bicyclic aminocarboxylic acids |
ZA884727A ZA884727B (en) | 1987-07-03 | 1988-07-01 | A process for the preparation of bicyclic amino carboxylic acids,intermediates in this process,and their use |
DK367488A DK170373B1 (en) | 1987-07-03 | 1988-07-01 | Process for preparing condensed proline derivatives, as well as intermediates in this process |
AU18602/88A AU617328B2 (en) | 1987-07-03 | 1988-07-01 | A process for the preparation of bicyclic amino carboxylic acids, intermediates in this process, and their use |
NZ225253A NZ225253A (en) | 1987-07-03 | 1988-07-01 | Preparation of bicyclic amino carboxylic acid derivatives and intermediates therefor |
PT87904A PT87904B (en) | 1987-07-03 | 1988-07-01 | PROCESS FOR THE PREPARATION OF BICYCLIC ACID AND BODY PRODUCTS FOR THEIR PREPARATION |
IL86943A IL86943A0 (en) | 1987-07-03 | 1988-07-01 | Process for the preparation of bicyclic amino carboxylic acids and novel compounds obtained by such process |
ES88110612T ES2065899T3 (en) | 1987-07-03 | 1988-07-02 | PROCEDURE FOR THE PREPARATION OF BICYCLE AMINO CARBOXYL ACIDS, INTERMEDIATE PRODUCTS OF THIS PROCEDURE AND THEIR USE. |
EP88110612A EP0297620B1 (en) | 1987-07-03 | 1988-07-02 | Process for the preparation of byciclic aminocarboxylic acids, intermediates for this process and their use |
AT88110612T ATE114642T1 (en) | 1987-07-03 | 1988-07-02 | PROCESS FOR THE PREPARATION OF BICYCLIC AMINOCARBONIC ACIDS, INTERMEDIATE PRODUCTS OF THAT PROCESS AND THEIR USE. |
DE3852219T DE3852219D1 (en) | 1987-07-03 | 1988-07-02 | Process for the preparation of bicyclic aminocarboxylic acids, intermediates of this process and their use. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873722007 DE3722007A1 (en) | 1987-07-03 | 1987-07-03 | METHOD FOR PRODUCING BICYCLIC AMINOCARBONIC ACIDS, INTERMEDIATE PRODUCTS OF THIS METHOD AND THE USE THEREOF |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3722007A1 true DE3722007A1 (en) | 1989-01-12 |
Family
ID=6330839
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19873722007 Withdrawn DE3722007A1 (en) | 1987-07-03 | 1987-07-03 | METHOD FOR PRODUCING BICYCLIC AMINOCARBONIC ACIDS, INTERMEDIATE PRODUCTS OF THIS METHOD AND THE USE THEREOF |
DE3852219T Expired - Lifetime DE3852219D1 (en) | 1987-07-03 | 1988-07-02 | Process for the preparation of bicyclic aminocarboxylic acids, intermediates of this process and their use. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3852219T Expired - Lifetime DE3852219D1 (en) | 1987-07-03 | 1988-07-02 | Process for the preparation of bicyclic aminocarboxylic acids, intermediates of this process and their use. |
Country Status (18)
Country | Link |
---|---|
US (1) | US5011940A (en) |
EP (1) | EP0297620B1 (en) |
JP (1) | JP2564614B2 (en) |
KR (1) | KR960012363B1 (en) |
AT (1) | ATE114642T1 (en) |
AU (1) | AU617328B2 (en) |
CA (1) | CA1332422C (en) |
DE (2) | DE3722007A1 (en) |
DK (1) | DK170373B1 (en) |
ES (1) | ES2065899T3 (en) |
FI (1) | FI92691C (en) |
HU (1) | HU203533B (en) |
IE (1) | IE66150B1 (en) |
IL (1) | IL86943A0 (en) |
NO (1) | NO173864C (en) |
NZ (1) | NZ225253A (en) |
PT (1) | PT87904B (en) |
ZA (1) | ZA884727B (en) |
Families Citing this family (3)
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DE3839127A1 (en) * | 1988-11-19 | 1990-05-23 | Hoechst Ag | PYRROLIDONE-2-CARBONIC ACID DERIVATIVES WITH PSYCHOTROPER EFFECT |
US5952497A (en) * | 1996-07-10 | 1999-09-14 | University Of Georgia Research Foundation | N.sup.α -Bpoc amino acid pentafluorophenyl (Pfp) esters and 3,4-dihydro-4-oxo-1,2,3-benzotriazin-3-yl (ODhbt) esters |
ZA200704767B (en) * | 2004-11-05 | 2008-08-27 | King Pharmaceuticals Res & Dev | Stabilized individually coated ramipril particles, compositions and methods |
Family Cites Families (33)
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JPS5572169A (en) * | 1978-11-27 | 1980-05-30 | Tanabe Seiyaku Co Ltd | Isoquinoline derivative and its preparation |
IL58849A (en) * | 1978-12-11 | 1983-03-31 | Merck & Co Inc | Carboxyalkyl dipeptides and derivatives thereof,their preparation and pharmaceutical compositions containing them |
US4294832A (en) * | 1979-04-28 | 1981-10-13 | Tanabe Seiyaku Co., Ltd. | Tetrahydroisoquinoline compounds and a pharmaceutical composition thereof |
FR2503155A2 (en) * | 1980-10-02 | 1982-10-08 | Science Union & Cie | NOVEL SUBSTITUTED IMINO DIACIDES, PROCESSES FOR THEIR PREPARATION AND THEIR USE AS AN ENZYME INHIBITOR |
US4508729A (en) * | 1979-12-07 | 1985-04-02 | Adir | Substituted iminodiacids, their preparation and pharmaceutical compositions containing them |
FR2491469A1 (en) * | 1980-10-02 | 1982-04-09 | Science Union & Cie | 2-Carboxy-per:hydro-indole(s) and per or tetra:hydro-isoquinoline(s) - having a carboxy-substd. amino-acyl N-gp., inhibit carboxy:poly:peptidase(s), and kininase II and control hypertension |
IE52663B1 (en) * | 1980-04-02 | 1988-01-20 | Warner Lambert Co | Substituted acyl derivatives of octahydro-1h-indole-2-carboxylic acids |
EP0278530A3 (en) * | 1980-08-30 | 1989-08-02 | Hoechst Aktiengesellschaft | Amino acid derivatives, process for their preparation, agents containing them and their use |
IL63813A0 (en) * | 1980-09-17 | 1981-12-31 | Univ Miami | Carboxyalkyl peptides and thioethers and ethers of peptides,antihypertensive compositions and methods for their use |
DE3174844D1 (en) * | 1980-10-23 | 1986-07-24 | Schering Corp | Carboxyalkyl dipeptides, processes for their production and pharmaceutical compositions containing them |
ZA817261B (en) * | 1980-10-23 | 1982-09-29 | Schering Corp | Carboxyalkyl dipeptides,processes for their production and pharmaceutical compositions containing them |
US4374847A (en) * | 1980-10-27 | 1983-02-22 | Ciba-Geigy Corporation | 1-Carboxyalkanoylindoline-2-carboxylic acids |
GB2086390B (en) * | 1980-11-03 | 1984-06-06 | Ciba Geigy Ag | 1-carboxy-azaalkanoylindoline-2-carboxylic acids process for their manufacture pharmaceutical preparations containing these compounds and their therapeutic application |
US4820729A (en) * | 1981-03-30 | 1989-04-11 | Rorer Pharmaceutical Corporation | N-substituted-amido-amino acids |
DE3226768A1 (en) * | 1981-11-05 | 1983-05-26 | Hoechst Ag, 6230 Frankfurt | DERIVATIVES OF CIS, ENDO-2-AZABICYCLO- (3.3.0) -OCTAN-3-CARBONIC ACID, METHOD FOR THE PRODUCTION THEREOF, THE MEANS CONTAINING THEM AND THE USE THEREOF |
NZ202903A (en) * | 1981-12-29 | 1988-01-08 | Hoechst Ag | 1-- pe pyrrol-2-yl-carboxylic acid derivatives and pharmaceutical compositions |
DE3210496A1 (en) * | 1982-03-23 | 1983-10-06 | Hoechst Ag | NEW DERIVATIVES OF BICYCLIC AMINO ACIDS, METHOD FOR THE PRODUCTION THEREOF, THE MEANS CONTAINING THEM AND THE USE THEREOF, AND NEW BICYCLIC AMINO ACIDS AS INTERMEDIATE STAGES AND METHOD FOR THE PRODUCTION THEREOF |
DE3211397A1 (en) * | 1982-03-27 | 1983-11-10 | Hoechst Ag, 6230 Frankfurt | SPIRO (4. (3 + N)) - 2-AZA-3-CARBONIC ACID DERIVATIVES, METHOD FOR THE PRODUCTION THEREOF, THE MEANS CONTAINING THEM AND THEIR USE |
DE3211676A1 (en) * | 1982-03-30 | 1983-10-06 | Hoechst Ag | NEW DERIVATIVES OF CYCLOALKA (C) PYRROL CARBONIC ACIDS, METHOD FOR THE PRODUCTION THEREOF, THEIR SUBSTANCES AND THE USE THEREOF AND NEW CYCLOALKA (C) PYRROL CARBONIC ACIDS AS THE INTERMEDIATE LEVELS AND METHODS |
DE3242151A1 (en) * | 1982-11-13 | 1984-05-17 | Hoechst Ag, 6230 Frankfurt | NEW DERIVATIVES OF TRICYCLIC AMINO ACIDS, METHOD FOR THE PRODUCTION THEREOF, THEIR SUBSTANCES AND THE USE THEREOF, AND NEW BICYCLIC AMINO ACIDS AS INTERMEDIATE STAGES AND METHOD FOR THE PRODUCTION THEREOF |
DE3246503A1 (en) * | 1982-12-16 | 1984-06-20 | Hoechst Ag, 6230 Frankfurt | DERIVATIVES OF CIS, ENDO-2-AZABICYCLO- (5.3.0) -DECAN-3-CARBONIC ACID, METHOD FOR THE PRODUCTION THEREOF, THESE AGENTS AND THE USE THEREOF |
DE3300316A1 (en) * | 1983-01-07 | 1984-07-12 | Hoechst Ag, 6230 Frankfurt | DISUBSTITUTED PROLIN DERIVATIVES, METHOD FOR THEIR PRODUCTION AND THEIR USE |
DE3300774A1 (en) * | 1983-01-12 | 1984-07-12 | Hoechst Ag, 6230 Frankfurt | NEW SPIROCYCLIC AMINO ACIDS, METHOD FOR THE PRODUCTION THEREOF AND THE USE THEREOF AND NEW SPIROCYCLIC AMINO ACIDS AS INTERMEDIATE PRODUCTS AND METHOD FOR THE PRODUCTION THEREOF |
DE3303112A1 (en) * | 1983-01-31 | 1984-08-09 | Hoechst Ag, 6230 Frankfurt | METHOD FOR RACEMATE SEPARATION OF OPTICALLY ACTIVE BICYCLIC IMINO (ALPHA) CARBONIC ACIDS |
DE3315464A1 (en) * | 1983-04-28 | 1984-10-31 | Hoechst Ag, 6230 Frankfurt | METHOD FOR PRODUCING N-ALKYLATED DIPEPTIDES AND THEIR ESTERS |
DE3322530A1 (en) * | 1983-06-23 | 1985-01-10 | Hoechst Ag, 6230 Frankfurt | METHOD FOR PRODUCING MONO, BI AND TRICYCLIC AMINO ACIDS |
DE3324263A1 (en) * | 1983-07-06 | 1985-01-17 | Hoechst Ag, 6230 Frankfurt | DERIVATIVES OF 2-AZABICYCLO (3.1.0) HEXAN-3-CARBONIC ACID, METHOD FOR THE PRODUCTION THEREOF, THEIR SUBSTANCES AND THE USE THEREOF, AND 2-AZABICYCLO (3.1.0) HEXANE DERIVATIVES AS INTERMEDIATE PRODUCTS AND PROCESS PRODUCTS |
DE3345355A1 (en) * | 1983-12-15 | 1985-06-27 | Hoechst Ag, 6230 Frankfurt | METHOD FOR RACEMATE CLEAVING BICYCLIC IMINO (ALPHA) CARBONIC ACID ESTERS |
EP0190224A1 (en) * | 1984-07-30 | 1986-08-13 | Schering Corporation | PROCESS FOR THE PREPARATION OF CIS, ENDOOCTAHYDROCYCLOPENTA [b] PYRROLE-2-CARBOXYLATE |
DE3431541A1 (en) * | 1984-08-28 | 1986-03-06 | Hoechst Ag, 6230 Frankfurt | CIS, ENDO-2-AZABICYCLOALKAN-3-CARBONIC ACID DERIVATIVES, METHOD FOR THE PRODUCTION THEREOF, THEIR USE AND INTERMEDIATE PRODUCTS IN THEIR PRODUCTION |
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GB8716278D0 (en) * | 1987-07-10 | 1987-08-19 | Fujisawa Pharmaceutical Co | Antimicrobial agent |
US4922083A (en) * | 1988-04-22 | 1990-05-01 | Thermon Manufacturing Company | Flexible, elongated positive temperature coefficient heating assembly and method |
-
1987
- 1987-07-03 DE DE19873722007 patent/DE3722007A1/en not_active Withdrawn
-
1988
- 1988-06-30 CA CA000572358A patent/CA1332422C/en not_active Expired - Lifetime
- 1988-06-30 FI FI883141A patent/FI92691C/en active IP Right Grant
- 1988-07-01 AU AU18602/88A patent/AU617328B2/en not_active Expired
- 1988-07-01 DK DK367488A patent/DK170373B1/en not_active IP Right Cessation
- 1988-07-01 IL IL86943A patent/IL86943A0/en not_active IP Right Cessation
- 1988-07-01 KR KR1019880008172A patent/KR960012363B1/en not_active IP Right Cessation
- 1988-07-01 IE IE201988A patent/IE66150B1/en not_active IP Right Cessation
- 1988-07-01 PT PT87904A patent/PT87904B/en not_active IP Right Cessation
- 1988-07-01 JP JP63162750A patent/JP2564614B2/en not_active Expired - Lifetime
- 1988-07-01 ZA ZA884727A patent/ZA884727B/en unknown
- 1988-07-01 HU HU883459A patent/HU203533B/en unknown
- 1988-07-01 US US07/214,457 patent/US5011940A/en not_active Expired - Lifetime
- 1988-07-01 NZ NZ225253A patent/NZ225253A/en unknown
- 1988-07-01 NO NO882957A patent/NO173864C/en not_active IP Right Cessation
- 1988-07-02 ES ES88110612T patent/ES2065899T3/en not_active Expired - Lifetime
- 1988-07-02 EP EP88110612A patent/EP0297620B1/en not_active Expired - Lifetime
- 1988-07-02 DE DE3852219T patent/DE3852219D1/en not_active Expired - Lifetime
- 1988-07-02 AT AT88110612T patent/ATE114642T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI883141A (en) | 1989-01-04 |
HU203533B (en) | 1991-08-28 |
JP2564614B2 (en) | 1996-12-18 |
ATE114642T1 (en) | 1994-12-15 |
AU1860288A (en) | 1989-01-05 |
CA1332422C (en) | 1994-10-11 |
FI92691B (en) | 1994-09-15 |
AU617328B2 (en) | 1991-11-28 |
FI883141A0 (en) | 1988-06-30 |
FI92691C (en) | 1994-12-27 |
KR960012363B1 (en) | 1996-09-20 |
HUT50120A (en) | 1989-12-28 |
EP0297620A3 (en) | 1991-06-05 |
IL86943A0 (en) | 1988-12-30 |
DK367488A (en) | 1989-01-04 |
NZ225253A (en) | 1990-12-21 |
NO882957L (en) | 1989-01-04 |
KR890001984A (en) | 1989-04-07 |
ZA884727B (en) | 1989-03-29 |
PT87904A (en) | 1989-06-30 |
IE882019L (en) | 1989-01-03 |
US5011940A (en) | 1991-04-30 |
EP0297620A2 (en) | 1989-01-04 |
NO882957D0 (en) | 1988-07-01 |
ES2065899T3 (en) | 1995-03-01 |
DK170373B1 (en) | 1995-08-14 |
IE66150B1 (en) | 1995-12-13 |
DE3852219D1 (en) | 1995-01-12 |
NO173864C (en) | 1994-02-16 |
EP0297620B1 (en) | 1994-11-30 |
NO173864B (en) | 1993-11-08 |
DK367488D0 (en) | 1988-07-01 |
PT87904B (en) | 1995-03-01 |
JPS6434960A (en) | 1989-02-06 |
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